<script setup lang="ts">
import { loginByCode, loginByPassword, sendCode } from '@/services/user'
import { useUserStore } from '@/stores'
// 导入校验规则
import { mobileRules, passwordRules, codeRules } from '@/utils/rules'
import { showSuccessToast, showToast, type FormInstance } from 'vant'
import { onUnmounted, ref } from 'vue'
import { useRoute, useRouter } from 'vue-router'

const mobile = ref('')
const password = ref('')
const agree = ref(false)

const store = useUserStore()
const router = useRouter()
const route = useRoute()

const onSubmit = async () => {
  if (!agree.value) {
    showToast('请勾选用户协议及隐私条款')
    return
  }
  let res
  if (isPass.value) {
    res = await loginByPassword(mobile.value, password.value)
  } else {
    res = await loginByCode(mobile.value, code.value)
  }
  store.setUser(res.data)
  showSuccessToast('登录成功')
  console.log(route.query.returnUrl)
  if (route.query.returnUrl) {
    // 登录之后后退，应该不希望看到登录页，所以用replace
    // replace接收一个字符串参数，如果不用as string会报类型错误
    router.replace(route.query.returnUrl as string)
  } else {
    router.replace('/user')
  }
}

// 验证码登录
const isPass = ref(true)
const code = ref('')

// 发送验证码
const form = ref<FormInstance>()
const time = ref(0)
let timer: number

const onSend = async () => {
  // 如果倒计时中，没有作用
  if (time.value > 0) return
  // 验证手机号
  await form.value?.validate('mobile')
  // 调用发送验证码请求
  await sendCode(mobile.value, 'login')
  showToast('发送成功')
  // 设置倒计时时间
  time.value = 60
  // 如果有定时器，先清除，避免重复开启
  if (timer) clearInterval(timer)
  // 设计计数器
  timer = setInterval(() => {
    // 每秒时间减1
    time.value--
    if (time.value == 0) clearInterval(timer)
  }, 1000)
}
// 组件卸载之后执行
onUnmounted(() => {
  clearInterval(timer)
})

// 密码是否可见
const isPwdShow = ref(false)
</script>

<template>
  <div class="login-page">
    <cp-nav-bar right-text="注册" @click-right="$router.push('/register')"></cp-nav-bar>
    <!-- 头部 -->
    <div class="login-head">
      <h3>{{ isPass ? '密码登录' : '短信验证码登录' }}</h3>
      <a href="javascript:;">
        <span @click="isPass = !isPass">{{ isPass ? '短信验证码登录' : '密码登录' }}</span>
        <van-icon name="arrow"></van-icon>
      </a>
    </div>
    <!-- 表单 -->
    <van-form autocomplete="off" @submit="onSubmit" ref="form">
      <van-field
        name="mobile"
        v-model="mobile"
        :rules="mobileRules"
        placeholder="请输入手机号"
        type="tel"
      ></van-field>
      <van-field
        v-if="isPass"
        maxlength="24"
        v-model="password"
        :rules="passwordRules"
        placeholder="请输入密码"
        :type="isPwdShow ? 'text' : 'password'"
      >
        <template #button>
          <cp-icon
            :name="isPwdShow ? 'login-eye-on' : 'login-eye-off'"
            @click="isPwdShow = !isPwdShow"
            style="margin-right: 10px"
          ></cp-icon>
        </template>
      </van-field>
      <van-field
        v-else
        maxlength="6"
        v-model="code"
        :rules="codeRules"
        placeholder="请输入短信验证码"
        type="digit"
      >
        <template #button>
          <span class="btn-send" :class="{ active: time > 0 }" @click="onSend">{{
            time > 0 ? `${time}秒后重新发送` : '发送验证码'
          }}</span>
        </template></van-field
      >
      <div class="cp-cell">
        <van-checkbox v-model="agree">
          <span>我已同意</span>
          <a href="javascript:;">用户协议</a>
          <span>及</span>
          <a href="javascript:;">隐私条款</a>
        </van-checkbox>
      </div>
      <div class="cp-cell">
        <van-button native-type="submit" block round type="primary">登 录</van-button>
      </div>
      <div class="cp-cell">
        <a href="javascript:;">忘记密码？</a>
      </div>
    </van-form>
    <!-- 底部 -->
    <div class="login-other">
      <van-divider>第三方登录</van-divider>
      <div class="icon">
        <img src="@/assets/qq.svg" alt="" />
      </div>
    </div>
  </div>
</template>

<style lang="scss" scoped>
.login {
  &-page {
    padding-top: 46px;
  }
  &-head {
    display: flex;
    padding: 30px 30px 50px;
    justify-content: space-between;
    align-items: flex-end;
    line-height: 1;
    h3 {
      font-weight: normal;
      font-size: 24px;
    }
    a {
      font-size: 15px;
    }
  }
  &-other {
    margin-top: 60px;
    padding: 0 30px;
    .icon {
      display: flex;
      justify-content: center;
      img {
        width: 36px;
        height: 36px;
        padding: 4px;
      }
    }
  }
}
.van-form {
  padding: 0 14px;
  .cp-cell {
    height: 52px;
    line-height: 24px;
    padding: 14px 16px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    .van-checkbox {
      a {
        color: var(--cp-primary);
        padding: 0 5px;
      }
    }
  }
  .btn-send {
    color: var(--cp-primary);
    &.active {
      color: rgba(22, 194, 163, 0.5);
    }
  }
}
</style>
